(2003, 27. February). 2002 Physioball Supplement. Zugriff unter http://www.usfigureskating.org/content/physioexercises.pdf
APA (7th ed.) Citation(2002). 2002 Physioball Supplement.
Chicago Style (17th ed.) Citation2002 Physioball Supplement. 2002.
MLA (9th ed.) Citation2002 Physioball Supplement. 2002.
Warning: These citations may not always be 100% accurate.